#VU100169 Use-after-free in Linux kernel - CVE-2024-50261
Vulnerability identifier: #VU100169
Vulnerability risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2024-50261
CWE-ID:
CWE-416
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the macsec_free_netdev() function in drivers/net/macsec.c. A local user can escalate privileges on the system.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 6.1, 6.1 rc1, 6.1 rc3, 6.1 rc7, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6, 6.1.7, 6.1.8, 6.1.9, 6.1.10, 6.1.11, 6.1.12, 6.1.13, 6.1.14, 6.1.15, 6.1.16, 6.1.17, 6.1.18, 6.1.19, 6.1.20, 6.1.21, 6.1.22, 6.1.23, 6.1.24, 6.1.25, 6.1.26, 6.1.27, 6.1.28, 6.1.29, 6.1.30, 6.1.31, 6.1.32, 6.1.33, 6.1.34, 6.1.35, 6.1.36, 6.1.37, 6.1.38, 6.1.39, 6.1.40, 6.1.41, 6.1.42, 6.1.43, 6.1.44, 6.1.45, 6.1.46, 6.1.47, 6.1.48, 6.1.49, 6.1.50, 6.1.51, 6.1.52, 6.1.53, 6.1.54, 6.1.55, 6.1.56, 6.1.57, 6.1.58, 6.1.59, 6.1.60, 6.1.61, 6.1.62, 6.1.63, 6.1.64, 6.1.65, 6.1.66, 6.1.67, 6.1.68, 6.1.69, 6.1.70, 6.1.71, 6.1.72, 6.1.73, 6.1.74, 6.1.75, 6.1.76, 6.1.77, 6.1.78, 6.1.79, 6.1.80, 6.1.81, 6.1.82, 6.1.83, 6.1.84, 6.1.85, 6.1.86, 6.1.87, 6.1.88, 6.1.89, 6.1.90, 6.1.91, 6.1.92, 6.1.93, 6.1.94, 6.1.95, 6.1.96, 6.1.97, 6.1.98, 6.1.99, 6.1.100, 6.1.101, 6.1.102, 6.1.103, 6.1.104, 6.1.105, 6.1.106, 6.1.107, 6.1.108, 6.1.109, 6.1.110, 6.1.111, 6.1.112, 6.1.113, 6.1.114, 6.1.115, 6.6, 6.6 rc1, 6.6 rc2, 6.6 rc3, 6.6 rc4, 6.6 rc5, 6.6 rc6, 6.6.1, 6.6.2, 6.6.3, 6.6.4, 6.6.5, 6.6.6, 6.6.7, 6.6.8, 6.6.9, 6.6.10, 6.6.11, 6.6.12, 6.6.13, 6.6.14, 6.6.15, 6.6.16, 6.6.17, 6.6.18, 6.6.19, 6.6.20, 6.6.21, 6.6.22, 6.6.23, 6.6.24, 6.6.25, 6.6.26, 6.6.27, 6.6.28, 6.6.29, 6.6.30, 6.6.31, 6.6.32, 6.6.33, 6.6.34, 6.6.35, 6.6.36, 6.6.37, 6.6.38, 6.6.39, 6.6.40, 6.6.41, 6.6.42, 6.6.43, 6.6.44, 6.6.45, 6.6.46, 6.6.47, 6.6.48, 6.6.49, 6.6.50, 6.6.51, 6.6.52, 6.6.53, 6.6.54, 6.6.55, 6.6.56, 6.6.57, 6.6.58, 6.6.59, 6.11, 6.11.1, 6.11.2, 6.11.3, 6.11.4, 6.11.5, 6.11.6
External links
https://git.kernel.org/stable/c/872932cf75cf859804370a265dd58118129386fa
https://git.kernel.org/stable/c/9f5ae743dbe9a2458540a7d35fff0f990df025cf
https://git.kernel.org/stable/c/4614640f1d5c93c22272117dc256e9940ccac8e8
https://git.kernel.org/stable/c/f1e54d11b210b53d418ff1476c6b58a2f434dfc0
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.116
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.7
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.60
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
